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Browsing Articles by Author "Kigbu, A. A."

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    ACUTE TOXICITY AND BEHAVIOURAL STUDIES OF FRESH WATER FISH CLARIAS GARIEPINU EXPOSED TO N.P.K 15:15:15 FERTILIZER.
    (Department Of Forestry,Nasarawa State University Keffi, 2016-03-03) Lawee, A. Y.; Kigbu, A. A.; Agyo, K.
    The study on the acute toxicity and behavioural changes of inorganic (N.P.K 15:15:15) fertilizer on the juveniles of Clarias gariepinus with mean weight 54.3g with corresponding mean total length of 23.13cm and mean standard length of 14.41cm respectively were investigated using static bioassay over a period of 96hours interval. The observed behaviours of the fish were restlessness, loss of balance and period of quiescence and finally death. However, the intensity of these reactions and mucus secretion were more in tanks containing 1.84 and 1.92 gl-1 concentrations of the toxicants. Statistical analysis showed no-significant difference in the mean differences of operculum and tail fin movement. The 96 hours LC50 of the exposed fish was also determined to be 1.74 gl-1. This was observed to be dose-dependent. N.P.K 15:15:15 fertilizer has toxic potential and profound impact on behaviour on Clarias gariepinus juveniles.